今天在做产品的时候无意中看到了一行代码,
$c= new$class_name; $object_os= newstdClass; $c->on_init_app_router($object_os);
很疑惑,于是去类$c中看了一下,发现原来是对空类stdClass的实例$object_os进行了一些属性的动态添加。
从上面的三行代码中大致能看出来stdClass能为我们做些什么。
stdClass在产品的代码中见过几次,但是自己没有用过,于是查了一下相关资料,把心得整理总结如下。
stdClass是PHP的一个基类,所有的类几乎都继承这个类,所以任何时候都可以被new,可以让这个变量成为一个object。同时,这个基类又有一个特殊的地方,就是没有方法。
stdClass是在PHP5中逐渐流行起来的,这是因为,PHP5的对象的独特性,对象在任何地方被调用,都是引用地址型的,所以相对消耗的资源会少一些。在其它页面为它赋值时是直接修改,而不是引用一个拷贝。
例如:
$user= newstdClass(); $user->name = ‘gouki’; $myUser= $user; $myUser->name = ‘flypig’;
如果在PHP4时代,这样的代码就是在消耗系统资源。因为:
$myUser= $user;
这是创建了一个拷贝。所以,在PHP4的时候,都是这样使用:
$myUser= & $user;
从文章开始的三行代码我们可以看到,stdClass可以用来生成对象类型的元素,那么接下来,我们就通过stdClass将一个数组转为为对象类引出几种数组对象相互转换的方法:
一、stdClass数组转对象
$arr= array(); $arr['a'] = 1; $arr['b'] = 2; $arr['c'] = 3; $object= newstdClass; foreach($arras$key=> $value) { $object->$key= $value; } var_dump($object);
结果输出如下:
object(stdClass)#1 (3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) }
二、对象转数组
functionobject_to_array($obj) { $_arr= is_object($obj) ? get_object_vars($obj) : $obj; foreach($_arras$key=> $val) { $val= (is_array($val) || is_object($val)) ? object_to_array($val) : $val; $arr[$key] = $val; } return$arr; }
三、ArrayObject方法数组转对象
$arr= array('key1'=>'test1', 'key2'=> 'test2'); var_dump(newArrayObject($arr));
结果输出如下:
object(ArrayObject)#1 (1) { ["storage":"ArrayObject":private]=> array(2) { ["key1"]=> string(5) "test1" ["key2"]=> string(5) "test2" } }
当然PHP强大灵活决定了必定还有很多其他方法进行数组与对象的转换。

PHPisusedforsendingemailsduetoitsintegrationwithservermailservicesandexternalSMTPproviders,automatingnotificationsandmarketingcampaigns.1)SetupyourPHPenvironmentwithawebserverandPHP,ensuringthemailfunctionisenabled.2)UseabasicscriptwithPHP'smailfunct

The best way to send emails is to use the PHPMailer library. 1) Using the mail() function is simple but unreliable, which may cause emails to enter spam or cannot be delivered. 2) PHPMailer provides better control and reliability, and supports HTML mail, attachments and SMTP authentication. 3) Make sure SMTP settings are configured correctly and encryption (such as STARTTLS or SSL/TLS) is used to enhance security. 4) For large amounts of emails, consider using a mail queue system to optimize performance.

CustomheadersandadvancedfeaturesinPHPemailenhancefunctionalityandreliability.1)Customheadersaddmetadatafortrackingandcategorization.2)HTMLemailsallowformattingandinteractivity.3)AttachmentscanbesentusinglibrarieslikePHPMailer.4)SMTPauthenticationimpr

Sending mail using PHP and SMTP can be achieved through the PHPMailer library. 1) Install and configure PHPMailer, 2) Set SMTP server details, 3) Define the email content, 4) Send emails and handle errors. Use this method to ensure the reliability and security of emails.

ThebestapproachforsendingemailsinPHPisusingthePHPMailerlibraryduetoitsreliability,featurerichness,andeaseofuse.PHPMailersupportsSMTP,providesdetailederrorhandling,allowssendingHTMLandplaintextemails,supportsattachments,andenhancessecurity.Foroptimalu

The reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.

PHPperformancetuningiscrucialbecauseitenhancesspeedandefficiency,whicharevitalforwebapplications.1)CachingwithAPCureducesdatabaseloadandimprovesresponsetimes.2)Optimizingdatabasequeriesbyselectingnecessarycolumnsandusingindexingspeedsupdataretrieval.

ThebestpracticesforsendingemailssecurelyinPHPinclude:1)UsingsecureconfigurationswithSMTPandSTARTTLSencryption,2)Validatingandsanitizinginputstopreventinjectionattacks,3)EncryptingsensitivedatawithinemailsusingOpenSSL,4)Properlyhandlingemailheaderstoa


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SublimeText3 Linux new version
SublimeText3 Linux latest version

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SublimeText3 English version
Recommended: Win version, supports code prompts!

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
